I1 a été démontré que la vitamine A joue un rôle important dans la régulation, la prolifération et la différenciation des épithéliums cutanés et que sa carence au niveau de la peau entraîne la formation d'hyperkératose. It has been shown that vitamin A plays an important role in the regulation, proliferation and differentiation of skin epithelia and that its deficiency in the skin leads to the formation of hyperkeratosis.
En conséquence,étant donné qu'il est bien connu que la vitamine A est douée de propriétés antioxydantes,on peut estimer qu'il existe un lien entre l'inhibition de l'élimination normale du stratum disjunctum et le processus oxydatif,étant donné d'autre part,qu'il est également connu que la déficience en caroténoïdes alimentaires provoque l'hyperkératose. Inversement,une alimentation riche en caroténoïdes conduit à son inhibition.Consequently, since it is well known that vitamin A is endowed with antioxidant properties, it can be estimated that there is a link between the inhibition of the normal elimination of the stratum disjunctum and the oxidative process, given d On the other hand, it is also known that deficiency in food carotenoids causes hyperkeratosis. Conversely, a diet rich in carotenoids leads to its inhibition.
En fait,l'hyperkératose peut être due à deux causes principales:la première étant liée à une accélération oxydative des fonctions sulfhydriles au sein des premières assises du stratum corneum augmentan ainsi,anormalement sa teneur en soufre et en conséquence,la rigidité du milieu extracellulaire,et la cohésion des cornéocytes.In fact, hyperkeratosis can be due to two main causes: the first being linked to an oxidative acceleration of the sulfhydrile functions within the first layers of the stratum corneum thus increasing, abnormally its sulfur content and consequently, the rigidity of the extracellular medium , and the cohesion of the corneocytes.
La deuxième est due à une déficience hydrique du ciment liant les cornéocytes;dans les deux cas,cela conduit à une diminution de la vitesse de desquamation,et à l'hyperkératinisation.The second is due to a water deficiency in the cement binding the corneocytes; in both cases, this leads to a decrease in the speed of desquamation, and to hyperkeratinization.
Tenant compte de ces deux paramètres,la protection ou le traitement de l'hyperkératinisation doit conduire à une élévation du niveau de l'hydratation du ciment liant les cornéocytes et parallèlement,à une protection antioxydative qui évite l'augmentation de la cohésion des cornéocytes par dénaturation oxydative des lipides et des protéines, provoquant la formation d'agrégats augmentant la viscosité du milieu.Taking these two parameters into account, the protection or treatment of hyperkeratinization must lead to an increase in the level of hydration of the cement binding the corneocytes and, at the same time, to antioxidative protection which prevents the increase in cohesion of the corneocytes by oxidative denaturation of lipids and proteins, causing the formation of aggregates increasing the viscosity of the medium.
L'intervention d'un processus oxydatif dans l'hyperkératinisation est mise en évidence,par le fait d'un niveau anormalement élevé des sulfate qui expriment une augmentation anormale de l'oxydation des fonctions sulfhydriles et disulfures de la cystine,acide aminé soufré qui caractérise toutes les kératines. D'autre part,par comparaison avec l'existence d'un niveau relativement élevé des fonctions sulfhydriles d stratum disjunctum de la plante des pieds (qui est à l'abri de la lumière).The intervention of an oxidative process in hyperkeratinization is highlighted, by the fact of an abnormally high level of sulphates which express an abnormal increase in the oxidation of the sulfhydrile and disulfide functions of cystine, sulfur amino acid which characterizes all keratins. On the other hand, in comparison with the existence of a relatively high level of the sulfhydrile functions of the stratum disjunctum in the soles of the feet (which is protected from light).
En conséquence, le traitement de l'hyperkératinisation nécessite deux interventions,d'une part une action antiradicalaire,d'autre part, une activité hydratante.Consequently, the treatment of hyperkeratinization requires two interventions, on the one hand, an anti-free radical action, on the other hand, a hydrating activity.
Or les produits utilisés pour combattre l'hyperkératinisation sont des kératolytiques,comme l'acide salicylique qui élimine les assises celXulaires du stratum corneum ou des acides organiques hydroxylés en PositiOn alpha,qui eux,ne sont ni kératolytiques ni antiradicalaires.However, the products used to combat hyperkeratinization are keratolytics, such as salicylic acid which eliminates the cellular bases of the stratum corneum or organic acids hydroxylated in PositiOn alpha, which themselves are neither keratolytic nor anti-free radicals.
Ces acides hydroxylés sont salifiés en partie par de la soude ou par de l'ammoniaque. Sous forme de sels partiels,ils sont largement utilisés d nos jours dans la pratique du "peeling" dont le but est d'affiner, d'éclaircir et d'uniformiser le teint,provoquant ainsi un pseudorajeunissement de la peau du visage,par élimination du stratum disjunctum ainsi que des premières assises de cellules du stratum corneum.These hydroxy acids are partly salified with sodium hydroxide or ammonia. In the form of partial salts, they are widely used today in the practice of "peeling" the aim of which is to refine, lighten and standardize the complexion, thus causing pseudorejuvenation of the skin of the face, by elimination stratum disjunctum as well as the first layers of stratum corneum cells.
I1 est connu que les acides hydroxylés en alpha sont des acides relativement faibles,tel est le cas des acides glycolique (homologue hydroxylé de l'acide acétique) et de l'acide lactique par exemple. I1 a été constaté que l'acide glycolique ne pouvait être utilisé sous sa forme acide,qui provoque des inflammations. It is known that hydroxy alpha acids are relatively weak acids, such as glycolic acids (hydroxylated counterpart of acetic acid) and lactic acid for example. It has been found that glycolic acid cannot be used in its acid form, which causes inflammation.
D'autre part,il a été également constaté que les acides alpha hydroxylés,salifiés,accusaient une perte d'activité,lorsque le pH était superieur à 4,0. Aussi de nombreuses compositions destinées au peeling renferment elles des sels d'ammonium ou de sodium des acides glycolique et lactique,à un pH se situant entre 1,0 et 3,5,ce qui n'évite pas pour autant,selon certaines peaux,de provoquer des réactions d'irritation.On the other hand, it has also been found that the alpha hydroxylated acids, which are salified, show a loss of activity when the pH is above 4.0. Also, many compositions intended for peeling contain ammonium or sodium salts of glycolic and lactic acids, at a pH between 1.0 and 3.5, which does not prevent, according to certain skins, to cause irritation reactions.
La présente invention a pour objet la réalisation de compositions destinées à réduire la cohésion anormale entre les corneocytes, caractérisées en ce qu'elles comportent des acides organiques alpha hydroxylés dont les carboxyles sont ioniquement neutralisés par la fonction NH2 active de la lysine ou de l'arginine,sans pour autant fair un sel,la réaction n'entraînant pas de départ d'eau, contrairement à la salification par une base alcaline .La neutralisation étant effectuée en fonction de la destination de la composition, le pH se situera entre 1,0 et 4,0.La salification par ces bases biologiques évite ainsi les réactions d'irritation.The subject of the present invention is the production of compositions intended to reduce the abnormal cohesion between the corneocytes, characterized in that they comprise alpha-hydroxy organic acids whose carboxyls are ionically neutralized by the active NH2 function of lysine or of arginine, without making a salt, the reaction does not cause water to start, unlike salification with an alkaline base. Neutralization being carried out according to the destination of the composition, the pH will be between 1, 0 and 4.0. Salification with these biological bases thus avoids irritation reactions.
La présente invention est d'autre part caractérisée en ce que la lysine associée à un acide hydroxylé en alpha,confère à la structure ainsi réalisée,des propriétés antiradicalaires dont la capacité est déterminé par la réaction à la diphénylpicrylhydrazile (radical stable,dont la coloration caractéristique est éliminée par intervention d'une substance antiradicalaire).The present invention is further characterized in that lysine associated with an alpha hydroxylated acid, gives the structure thus produced, anti-free radical properties whose capacity is determined by the reaction to diphenylpicrylhydrazile (stable radical, the coloring of which characteristic is eliminated by the intervention of an anti-radical substance).
L'invention s'étend à toutes compositions destinées à combattre l'hyperkératinisation caractérisées en ce qu'elles comportent l'association d'un acide organique hydroxylé,représenté par R-COOH,avec la lysine;R-COOH pouvant être,à titre d'exemples non limitatifs,l'acide glycolique,l'acide lactique,ou l'acide malique.The invention extends to all compositions intended for combating hyperkeratinization, characterized in that they comprise the association of a hydroxylated organic acid, represented by R-COOH, with lysine; R-COOH can be, as non-limiting examples, glycolic acid, lactic acid, or malic acid.
R-COOH,2HN-(CH2)4-CH-COOH
NH2
Pour l'acide glycolique R= OHCH2
Pour l'acide lactique R= CH3-CH20H
Pour l'acide malique R= HOOC-CH20H-CH2
L'invention s'étend également à toutes compositions destinées à combattre le processus d'hyperkératinisation,en ce qu'elles comportent un acylaminoacides de soie,caractérisé par la présence de la sérine,seu acide aminé linéaire comportant comme l'acide glycolique un OH en alpha
OH-CH2-CH-COOH
NH2
Cet acide aminé hydroxylé,spécifique à la soie a montré son activité hydratante,lorsqu'il se trouve sous la forme d'acylsérine,en mélange avec les autres acides aminés de la soie.Contrairement aux acides organiques hydroxylés en alpha qui sont hydrosolubles,l'acylaminoacides de soie est liposoluble,ce qui permet de véhiculer la fonction OH hydratante dans un milieu hydrophobe qu'est le stratum corneum.R-COOH, 2HN- (CH2) 4-CH-COOH
NH2
For glycolic acid R = OHCH2
For lactic acid R = CH3-CH20H
For malic acid R = HOOC-CH20H-CH2
The invention also extends to all compositions intended to combat the hyperkeratinization process, in that they comprise a silk acylamino acids, characterized by the presence of serine, only linear amino acid comprising, like glycolic acid, an OH in alpha
OH-CH2-CH-COOH
NH2
This hydroxylated amino acid, specific to silk has shown its hydrating activity, when it is in the form of acylserine, in mixture with the other amino acids of silk. Unlike the organic acids hydroxylated alpha which are water soluble silk acylamino acids are liposoluble, which makes it possible to convey the hydrating OH function in a hydrophobic medium that is the stratum corneum.
A titre d'exemples non limitatif,de compositions destinées à l'inhibition de l'hyperkératose,c'est-a-dire à la diminution de le cohésion inter-cornéocytaire,caractérisant 1 'hyperkération, citons:
Compositions kératinorégulatrices:
Stéarate de glycérol 10g
Alcool cétylique 5
Sorbitol 5 glycérol 5
Acide glycolique 10
Lysine 5,5
Eau qs 100 pH:3,5
Stéarate de glycérol 10g
Stéarate de sorbitol 5
Alcool cétylique 5
Propylèneglycol 10
Palmitoylaminoacides de soie 5
Lauroylméthionate de lysine 0,5
Eau qs 100
pH: 3,5
Compositions pour Peeling
Stéarate de glycérol lCg
Stéarate de sorbitol 5
Gomme xanthane 3
Glycérol 10
Acide glycolique 14,3
Lysine 10
Eau qs 100
pH: 3,4
Stéarate de glycérol 15g
Alcool cétylique 5
Propylèneglycol 10
Acide glycolique 8
Lysine 3,8
Palmitoylaminoacides de soie 5
Eau qs 100
pH: 3,2
Compositions antiacnéiques
Stéarate de glycérol 10g
Stéarate de sorbitol 5
Sorbitol 8
Caprylyaminoacides de soie 3
Acide glycolique 6
Lysine 3
Palmitoylaminocides de soie 3
Eau qs 100
pH:3,3
Emulgateur 5g
Caprylylaminoacides de soie 3
Acide lactique 5
Arginine 0 2
Eau qs 100
pH:3,2By way of nonlimiting examples, of compositions intended for the inhibition of hyperkeratosis, that is to say for the reduction of inter-corneocyte cohesion, characterizing hyperkeration, let us cite:
Keratinoregulatory compositions:
Glycerol stearate 10g
Cetyl alcohol 5
Sorbitol 5 glycerol 5
Glycolic acid 10
Lysine 5.5
Water qs 100 pH: 3.5
Glycerol stearate 10g
Sorbitol 5 stearate
Cetyl alcohol 5
Propylene glycol 10
Silk palmitoylamino acids 5
Lysine lauroyl methionate 0.5
Water qs 100
pH: 3.5
Compositions for Peeling
LCg glycerol stearate
Sorbitol 5 stearate
Xanthan gum 3
Glycerol 10
Glycolic acid 14.3
Lysine 10
Water qs 100
pH: 3.4
Glycerol stearate 15g
Cetyl alcohol 5
Propylene glycol 10
Glycolic acid 8
Lysine 3.8
Silk palmitoylamino acids 5
Water qs 100
pH: 3.2
Anti-acne compositions
Glycerol stearate 10g
Sorbitol 5 stearate
Sorbitol 8
Silk caprylyamino acids 3
Glycolic acid 6
Lysine 3
Silk palmitoylaminocides 3
Water qs 100
pH: 3.3
5g emulsifier
Silk caprylylamino acids 3
Lactic acid 5
Arginine 0 2
Water qs 100
pH: 3.2
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9614754AFR2756489A1 (en) | 1996-12-02 | 1996-12-02 | Treatment of hyperkeratoses |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9614754AFR2756489A1 (en) | 1996-12-02 | 1996-12-02 | Treatment of hyperkeratoses |
| Publication Number | Publication Date |
|---|---|
| FR2756489A1true FR2756489A1 (en) | 1998-06-05 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9614754APendingFR2756489A1 (en) | 1996-12-02 | 1996-12-02 | Treatment of hyperkeratoses |
| Country | Link |
|---|---|
| FR (1) | FR2756489A1 (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1104671A1 (en)* | 1999-12-02 | 2001-06-06 | Laboratoires Serobiologiques(Societe Anonyme) | Cosmetic and/or pharmaceutical composition comprising hydroxycarboxylic acids and amino acids |
| WO2010043346A1 (en) | 2008-10-13 | 2010-04-22 | Lipotec, S.A. | Cosmetic or dermopharmaceutical composition containing pseudoalteromonas ferment extract |
| EP3965724A4 (en)* | 2019-05-06 | 2023-05-17 | Spinart, LLC | FORMULATIONS AND METHODS FOR PREPARING STABLE COSMETIC COMPOSITIONS |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS588007A (en)* | 1981-07-03 | 1983-01-18 | Shiseido Co Ltd | Cosmetic for making skin soft |
| FR2520613A1 (en)* | 1982-01-29 | 1983-08-05 | Moreau Lavaud Reine | Cosmetic compsns. contg. malate salts - of divalent metal and basic aminoacid |
| EP0413528A1 (en)* | 1989-08-15 | 1991-02-20 | Ruey J. Dr. Yu | Amphoteric compositions and polymeric forms of alpha hydroxyacids, and their therapeutic use |
| US5420106A (en)* | 1994-03-22 | 1995-05-30 | Bristol-Myers Squibb Company | Method and composition having enhanced alpha-hydroxy acid skin permeation and retention |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS588007A (en)* | 1981-07-03 | 1983-01-18 | Shiseido Co Ltd | Cosmetic for making skin soft |
| FR2520613A1 (en)* | 1982-01-29 | 1983-08-05 | Moreau Lavaud Reine | Cosmetic compsns. contg. malate salts - of divalent metal and basic aminoacid |
| EP0413528A1 (en)* | 1989-08-15 | 1991-02-20 | Ruey J. Dr. Yu | Amphoteric compositions and polymeric forms of alpha hydroxyacids, and their therapeutic use |
| US5420106A (en)* | 1994-03-22 | 1995-05-30 | Bristol-Myers Squibb Company | Method and composition having enhanced alpha-hydroxy acid skin permeation and retention |
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 7, no. 77 (C - 159)<1222> 30 March 1983 (1983-03-30)* |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1104671A1 (en)* | 1999-12-02 | 2001-06-06 | Laboratoires Serobiologiques(Societe Anonyme) | Cosmetic and/or pharmaceutical composition comprising hydroxycarboxylic acids and amino acids |
| WO2001039734A1 (en)* | 1999-12-02 | 2001-06-07 | Cognis France, S.A. | Cosmetic and/or pharmaceutical preparations containing amino acids and organic nitrogen compounds |
| WO2010043346A1 (en) | 2008-10-13 | 2010-04-22 | Lipotec, S.A. | Cosmetic or dermopharmaceutical composition containing pseudoalteromonas ferment extract |
| EP3965724A4 (en)* | 2019-05-06 | 2023-05-17 | Spinart, LLC | FORMULATIONS AND METHODS FOR PREPARING STABLE COSMETIC COMPOSITIONS |
| US12409121B2 (en) | 2019-05-06 | 2025-09-09 | Spinart, LLC | Formulations and methods for preparing stable cosmetic compositions |
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